// @(#)BooleanObj.java   9/2002
// Copyright (c) 1998-2002, Distributed Real-time Computing Lab (DRCL) 
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package drcl.data;

/**
 * Class that is similar to <code>Boolean</code> but is mutable.
 */
public class BooleanObj extends drcl.DrclObj
{
  public boolean value;

  public BooleanObj() {}
  public BooleanObj(boolean v)
  {  value = v;  }

  public void setValue(boolean v) { this.value = v; }
  public boolean  getValue()      { return value; }

  public boolean equals(Object o)
  {
    if (this == o) return true;
    else if (!(o instanceof BooleanObj)) return false;
    return value == ((BooleanObj)o).value;
  }

  public int hashCode() { return value? 1:0; }
  
  public void duplicate(Object source_)
  {
    value = ((BooleanObj)source_).value;
  }
  
  /** Flips the boolean value and returns the new one.  */
  public boolean flip()
  { 
    value = !value; 
    return value; 
  }
  
  public String toString() { return value+""; }
}

